Jaw crusher



Oct. 24, 1939., o. c. GRUENDER J'AW CRUSHER Filed May 9, 1936 5 Sheets-Sheet l fra /wafer 050d? 6- 6 7546%;

5 Sheets-Sheet 2 JAW CRUSHER O C. GRUENDER Filed May 9, 1936 Oct. 24, 1939. Q Q GRUENDEE 2,177,524

JAW CRUSHER Filed May 9, 1936 5 Sheets-Sheet 3 fi-"T r g -m.

Oct. 24, 1939. Q Q GRUENDER 2,177,524

J AW CRUSHER Filed May 9, 1936 5 Sheets-Sheet 4 fraveva/ar ds'mrafirzzezzdar Ott. 24, 1939. o. c. G'RUENDE'R J AW CRUSHER Filed May 9, 1956 5 Sheets-Sheet 5 Patented Oct. 24, 1939 PATENT orrics JAW CRUSHERA Oscar QGruender, Milwaukee, Wis., assignor to Nordberg Manufacturing 00., Milwaukee, Wis.,

a corporation of Wisconsin Application May 9, 1936, Serial No.v 78,809

v 2 Claims.

I My invention relates to an improvement in jaw crushers. One purpose is the provisionof improved means for supporting the moving jaw of such a crusher.

in the course of the specification and claims.

20. r l matically in the accompanying drawings, where- I illustrate my invention more or less diagram- Figure'l is a side elevation with parts broken away; v

Figure 2 is a section on the line 2-2 of Figure 1, with the parts in slightly different position; v s "Figure 3 is a vertical section on the line 33 of Figure 2;

Figure 4 is a section on the line. 4--4 of Figure 3; q

"Figure 5 is a view similar to Figure 3 illustrating' a single jaw crusher; and

Figure 6 is a section on the line 66 of Figure 3.

Like parts are indicated by like symbols throughout the specification and drawings.

Referring to the drawings, illustrates any base or foundation structure upon which the crusher is mounted.- 2 generally indicates any suitable base frame structure herein shown as having bottom webs or flanges 3. Any suitable means may be employed for securing the base frame in position upon the base I. I illustrate for example aplurality of bolts 4 with lock nuts 5,

the bolts passing through portions of the bottom flanges Sand anchored in any suitable fashion in the base I. The frame may include for example a plurality of upstanding side frame portions6 connected by transverse end webs l, l at the opposite ends of the crushers, as shown'for example in Figure 3.

The side frame members 6 are provided with generally cylindrical sleeve portions 8 and 9, ar-

ranged in pairs in general vertical alinementf Mounted in the lower sleeves 8, 8 are generally cylindrical sleeve inserts l0, l0, each with a terminal flange II which serves to position the sleeve and to limit its penetration within the surrounding sleeve portion 8, of the frame member 6.

, Mounted in the upper sleeve portions 9 is a fixed shaft l2 secured against rotation for example by set screws IS with lock nuts I 4, the ends of the set screws engaging apertures or fiattened portions I5 of the shaft l2, whereby the shaft is held against rotation.

Mounted for rotation or for oscillatory movement about the shaft I2 is the head structure generally indicated at 20. It includesan upper portion 2|, apertured as at 22, and provided, Within said aperture, with a pair of bearing sleeves 23, each provided at its outer end with a flange 24 recessed as at 25 to receive any suitable washer ring 26 which may, for example, be of leather. Rotation of the sleeve 23 is prevented by any suitable members such as the dowel pins 21 which pass through apertures 28 in the flanges 24, and penetrate a suitable distance into the head portion 2|. The head or moving jaw crusher includes a pair of downwardly and outwardly turned surface members 30, 3 I, connected by a plurality of transverse reinforcing webs 32. One of said webs includes an enlarged central portion 33 which may be apertured to receive any suitable pipe or conduit 34, the purpose of which 30 will later appear. The webs 32 are broken away to form space for a box or housing member 35, which may be formed integrally therewith and is provided with an open bottom closed by a closure plate 36 removably held in position for example by the screws 31. It is provided with a bottom enlargement 38 apertured as at 39 to receive a drain nipple 40.

generally indicates an actuating shaft mounted forrotation in the sleeves It. Each of said sleeves I!) may be provided with a plurality of bearing sleeves proper indicated at 46, each of said-sleeves having a terminal flange 41 apertured to receive dowels 48, whereby rotation in relation to the member I0 is prevented; Shaft 45 is further provided with reduced outer end portions 49 which may be connected tov pulleys or fly wheels 50 which may be counterweighted as at 5!. If desired each or either of these pulleys may be employed to receive any suitable drive belt, not herein shown, whereby the crusher may be driven from any suitable motor or equivalent power source. The intermediate portion of the shaft 45 is provided with an enlargedeccentric portion of substantial extension, indicated at 52.

' Positioned within the box 35, and vertically slidable in relation to the wear plates 53 is the sliding drive member 54, which is apertured as at 55 and provided, in said aperture, with the wear taking sleeves 56, which may be secured in position as by the locking portions or members 51. It will be understood that the inner faces of the members 56 conform to the outer face of the eccentric portion 52 of the shaft whereby, when the shaft 45 is rotated, the sliding drivel.

member 54 is imparted a vertical and lateral movement of substantial amplitude; Inasmuch as it is in sliding relationshipwith the wear plates. 53, the resultant movement of the head member 20 is a rotary oscillation about the axis-oflthe,

fixed shaft I2;

The crushing is performed by or jaw plates 60, 6|,whichmay be gripped at their bottom edges a'sby anoverhanging lip 62 of the members 30 and'3 I. It may be seated upon any suitable liner 63, of zinc or the like.

The upper edges of the two jaw plates 60, 6I are held clamped in position by the following structure. Each end of the jaw structure "is formed as a sideplate, as at 05 which may, for example, form part of a single casting of. which the previously described head structure 20 is also part. Secured to it areremovable wear taking plates. I illustrate, for example side plate members 61, 68, which may be held in position as by studs 69 and nuts I0. Lower plates II, I2 may be wedged or otherwise secured in position, with edges 13 opposed to corresponding edges'of the members 61, 68. The space between the plates 61 and 68 is filled by a pair of opposed removable liner plates I4, I5, the opposite pairs of said plates being connected by partially arcuatefbridge members I6, 11, which overlie the upper portion of the jaw structure 20,,and conform generally to it. The bridge portions I6, 11 are provided with bottom thrust portions or edges I8, 19, adapted to thrust against the upper edges of the jaw plates 60, 6|. I

80, 80 are studs'and 6|, 8| lock nuts whereby the plates and bridges above described are drawn downwardly toward the jaw structure 20, in such fashion that the upper edges of the jaw plates and 6| are positively clamped or locked, and the jaw plates held firmly against movement. It will be clear, from Figure 3; that there is a certain clearance between the bridge portions I6, 11

, and the jaw member 20, to provide for irregularities in size or shape or to permit the use of unfinished or partly finished castings and also to provide for the take-up and variation in size of the jaw plates 60 and 6|. '4

It will be. understood that, in the operation of my device, normally fixed jaw members are opposed to the jaw plates'60 and BI of the oscillated head structure 20. Inasmuch as, in the double jaw structure, both normally fixed jaws are identical, I will describe but one, corresponding symbols being employed in the drawings for both of these jaws. The normally fixed jaws are mounted to tilt or rotate outwardly away from themoving jaw, means being provided, as below described, for normally holding said jaws against such movement, during the continuance of normal crushing pressure.

Each outside end frame member 6 is provided 'with an enlarged half sleeve generally indicated as 90,- to which is opposed a mating half sleeve member or cap 9|, which may be held in position crushing plates ""like. I

.. Rotatable about the shaft 96, but normally fixed'against movement, is the jaw structure generally indicated'as I00. It includes a cylindrical knuckleorisleeve'portion I0 I, within which is the wear taking sleeve 91 above referred to. I02 is any suitableoilpr greasing inlet, closed by any suitable'fitting I03. I04 is an upper flange and I05 a lower, and undercut flange, the two being connected by any suitable webs I06. I01. indicates a back plate, which has integral therewith a rocker bearing portionI08. I09is any suitable jaw plate which is locked in position, at its upper edge, as by the wedge I I0 which is interposed between the upper bevel III of the plate I09 and the opposed beveled face I I2 of the flange I04. II3 is any suitable locking bolt and II4'are locking nuts whereby the wedge H0 is drawn into locking position and the jaw plate I09 is locked firmly in place on the jaw structure. II5 indicates a deflector or wear plate which is secured to any suitable bushing II6 mounted on a transverse shaft or'pin III, which spans the two side frame members 6. Its lower edge rests against the flange I04 but ismovable in relationthereto.

Spanning the end space between the side frame members 6, above the transverse end webs I, is the bridge structure generally indicated as I20 which abuts against inclined edges of the members 6, as at I2I. This bridge is normally locked in position in relation to the side members which it spans, being held in such position by a plurality of springs I 22 which are threaded on bolts I23.

The upper ends of these bolts are secured to the closed by any suitablefremovable cover I29 held in place for example by screws I30. Intermediate springs, without guiding bolts, may be employed as at I3I, which may be guided or positioned by any suitable stud or studs I32. 4

The bridge is provided with a central aperture 1 I 40, generally cylindrical in cross section but provided with an end cover or limit portion I4I. Slidable in the cylindrical portion I40 is any suitable slide member, herein indicated as I42. It is provided with an end bearing plate I43, indicated Any suitable shaft 96 may be locked between.

as flat and as extending substantially throughout the width'of the jaw. It is shown as directly opposed to the rocker portion I08, of the jaw. The jaw is normally held in the position shown in Figure 3, by theemployment of a tension rod I44 which may for example be hooked to the jaw as at I45 and which passes through an apertured lug I46 on the bridge structure. I4-I is a spring compressed between a lug I46 and any suitable washer I48 which may beadjustably positioned upon the tension rod I44, as by the nut"-l49. 'I herefore, the" jaw isheld against the member I43. In order to adjust the member I42, I43 in relation to the bridge, to permit adjustment of the 'normallyfixed jaw, I provide a plurality of shims I50 which may be inserted throughthe aperture I 5I, normally closed by any suitable cover'plate I52. These shims may be madein horseshoe form, slotted as at I53, to bridge the stem: I54 which is welded or otherwise secured to the member I42. The stem I54 is screw-threaded as at I55, to receive locking nuts I56, and passes through the plates I4I, as by the aperture I5'I. It will be understood that, after any desired shim or shimshave been dropped into place, the nuts I56 may be employed to lock the assembly firmly in position. A dowel I58 may be employed to prevent rotation of the member I42 and, inci dentally, of the shims.

The oiling system includes any suitable oil pumpgenerally indicated as 200. It may for example be driven by any suitable pump shaft 20 I,

with a gear 202 in mesh with a gear 203, keyed to the shaft portion 49, as shown at the left side of Figure 2. 204 is an oil inlet passage for the pump housing 2I0, the space about the gear 202 being closed by any suitable plate 205. 206 is a flexible oil return conduit mounted at one end on the nipple 40 and at the other on the nipple 201. 200 is another oil return passage extending from the oil collecting housing generally indicated as 209, at the opposite end of the shaft.

The oil return passage 208 is partly diagrammatically indicated in-dash and dot lines in Figure 2. Oil under pressure is delivered from the oil pump 200 by ducts 2I I, to an inlet duct ZI2 communicating with an inlet port 2I3 in one of the cylindrical sleeves I0. The space between the bushings 46 serves as a chamber or passage for the oil. The shaft 45 is provided with an oil passage 2 I4, from which a passage 2 I5 communicates with the oil inlet pass 2I3 above described. A similar passage 2l6 may deliver lubricant between the space of the bushings 46 at the opposite end of the shaft. The sliding drive member 54 is lubricated by means of the oil ducts 2I'I in the eccentric portion 52, of the shaft. The wear plates 53 receive lubricant by means of the ducts 2I8in the drive member 54, communicating with the space between the bearing sleeves 56. It will be understood that the lubricant delivered to the various bearings drains back to the oil collecting housings 209, 2I0, and the sump formed by the housing member35 and the bottom plate 36. The open end of the oil duct 2I4 is normally closed by a pipe plug 224.

The open ends of the housing member 35 are provided with any suitable sealing means, which may comprise fixed plates 2 I 9 supported upon the flange 4'! of the bearing sleeves 46, and the adjacent sleeve inserts I and pairs of plates 220, 22I, in sliding relationship with the plates 2I9. The plates 220, 22!, secured to the housing member 35 by any suitable means, for example screws 222, diagrammatically illustrated in Figure 2, straddle the plates 2 I9, thus providing an efficient seal for the oil chamber of the housing. Any suitable sealing rings 225 and 226, keyed to the reduced end portions 49 of the shaft 45 prevent leakage from the oil housings 209 and 2I0. The sealing ring 226 may be formed integral with the gear 203, as indicated in Figure 2. Lubricant for the bearing sleeves 23 of the head structure 20 about the shaft I2 is delivered through a pipe line 221 connected by means of a fitting 228 with the oil lines 2| I. A nipple 229 connects the oil line 22'! with an oil duct 230 in the shaft I2, from which ducts 23I lead to the inner periphery of the bearing sleeves 23 respectively. The oil, as it passes between the shaft and the bearings is received in the collecting channels 232 and the space 233 between the'bearing sleeves 23 from whence the lubricant flows into the channel 234 formed in the head structure portion 2|, and drains to the housing '35 through the pipe 34. This lubricant serves partly to lubricate the wear plates 53. The Washer rings 26 form a seal about the shaft I2 and prevent escape of the oil about the open ends of the bearing sleeves 23.

Figure illustrates a single jaw crusher which is similar in construction to the double jaw crusher above described, and similar parts are indicated by like numerals.

The base frame, generally indicated by 240, is formed similarly to the base frame 2. However, it is cut away as at 24I to shorten the frame. The side frame portions, indicated by like numerals 6, are connected by a web 242, corresponding to one of the webs I. The remaining open space is covered by a closure plate 243 secured, for example, by screws 244 to the web 242 and 'side frame members 6. The head structure 245 is similar in construction to the head structure 20 previously described and like parts are indicated by like numerals. One of the downwardly inclined surface members 30 has been omitted, and a web 246 is provided in its place, connecting the webs 32 of the head structure. The removable liner plate 248, similar to the liner plate I4, is formed with an inclined bridge member 249, adapted to direct the material into the crushing cavity defined by the opposed crushing members 6| and I09.

Part of the upper open end may be closed by a closure plate 250 secured to the side frame member 6 by any suitable means, for example, bolts 25I.

Lubricating means may be identically as described and illustrated in previous figures.

It will be realized that, whereas I have described and illustrated a practical and operative device, nevertheless many changes may be made in the size, shape, number and disposition of parts without departing from the spirit of my invention. I therefore wish my description and drawings to be taken as in a broad sense illustrative or diagrammatic, rather than as limiting me to the precise showing, of the description and drawings.

I claim:

1. In a jaw crusher, a frame, a movable jaw mounted on said frame and means for actuating it, a normally fixed jaw mounted on said frame, means for varying the distance between the opposed orushing faces of the crushing cavity thus formed, including an abutment opposed to said normally fixed jaw, yielding means for urging such jaw against said abutment and means for adjusting said abutment toward and away from the crushing cavity, including a cylindrical sleeve member associated with the frame, a cylindrical abutment member axially slidable in said sleeve member and having said abutment associated and movable therewith, and means for adjusting the location of said member in said sleeve, including generally circular shims adapted to penetrate said sleeve member, the side of said sleeve member being provided with a side aperture for the admission of such shims.

2. In a jaw crusher, a frame, a movable jaw member and having said abutment associated and movable therewith, and means for adjusting the location of said member in said sleeve, including generally circular shims adapted to penetrate said sleeve member, the side of said sleeve member being provided with a side apertureffor the ad,- mission of such shims, and unitary means. for preventing rotation of said cylindrical abutment member and said shims.

OSCAR c. GRUENDER. 

